MAX17014 Просмотр технического описания (PDF) - Maxim Integrated
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MAX17014 Datasheet PDF : 33 Pages
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Low-Cost Multiple-Output
Power Supply for LCD TVs
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VIN = VIN2 = 12V, AVDD = VOVIN = VSUP = 15V, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless oth-
erwise noted.)
PARAMETER
FB1 Load Regulation
FB1 Line Regulation
FB1 Input Bias Current
FB1 Transconductance
FB1 Voltage Gain
LX1 Leakage Current
LX1 Current Limit
Current-Sense Transresistance
LX1 On-Resistance
Soft-Start Period
CONDITIONS
0 < ILOAD < full, transient only
10.8V < VVIN < 13.2V
VFB1 = 1.25V
I = ±2.5μA at COMP, FB1 = COMP
FB1 to COMP
VFB1 = 1.5V, VLX1 = 20V
VFB1 = 1.1V, duty cycle = 25%
MIN TYP MAX
-1
0.08 0.15
25
125 200
150 320 560
1400
4
40
3.2
3.7
4.2
0.16 0.23 0.30
110 220
3
Soft-Start Step Size
ILIM /
128
POSITIVE AND NEGATIVE CHARGE-PUMP REGULATORS
SUP Input Supply Range
8.0
18.0
SUP Input Supply Current
VFBP = 1.5V, VFBN = 0.15V (not switching)
0.2
0.4
SUP Overvoltage Threshold
SUP rising edge, 250mV typical hysteresis (Note 3) 18
19
20
FBP Regulation Voltage
0°C < TA < +85°C
TA = +25°C
1.23 1.25 1.27
1.2375
1.2625
FBP Line-Regulation Error
11V < VSUP < 16V, not in dropout
0.2
FBP Input Bias Current
VFBP = 1.5V
-50
+50
DRVP p-Channel MOSFET
On-Resistance
1.0
3.0
DRVP n-Channel MOSFET
On-Resistance
0.5
1.0
FBP Fault Trip Level
Falling edge
Positive Charge-Pump Soft-Start Period
0.96 1.00 1.04
3
Positive Charge-Pump Soft-Start
Step Size
VREF /
128
FBN Regulation Voltage
FBN Input Bias Current
FBN Line Regulation Error
DRVN p-Channel On-Resistance
DRVN n-Channel On-Resistance
FBN Fault Trip Level
Negative Charge-Pump Soft-Start
Negative Charge-Pump Soft-Start
Step Size
VREF - VFBN
0°C < TA < +85°C
TA = +25°C
VFBN = 0mV
11V < VSUP < 16V, not in dropout
Rising edge
0.988
0.99
-50
450
1.000
1.00
1.0
0.5
500
3
(VREF -
VFBN) /
128
1.012
1.01
+50
0.2
3.0
1.0
550
UNITS
%
%/V
nA
μS
V/V
μA
A
V/A
m
ms
A
V
mA
V
V
%/V
nA
V
ms
V
V
nA
%/V
mV
ms
V
4 _______________________________________________________________________________________
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